Toggle Main Menu Toggle Search

Open Access padlockePrints

Ecological assessments of the coral reef communities in the Eastern Caribbean and the effects of herbivory in influencing coral juvenile density and algal cover

Lookup NU author(s): Dr Steven Newman


Full text for this publication is not currently held within this repository. Alternative links are provided below where available.


© 2016 Blackwell Verlag GmbH. Caribbean reefs have been unevenly surveyed, with many areas lacking baseline data. In this study, the current status of Orbicella reefs, a structurally complex forereef habitat, was quantified in an understudied region, the Eastern Caribbean. During 2011 the same observers surveyed benthic assemblages, coral juvenile density, herbivorous fishes, and invertebrates at 30 Orbicella reefs in four Eastern Caribbean areas: Antigua, Barbados, St Lucia, and St Vincent and the Grenadines (hereafter St Vincent). Not all Orbicella forereefs were functionally the same in the Eastern Caribbean. Benthic communities and herbivorous fishes varied greatly among islands. Hard coral had the highest overall percent cover on most reefs in this study, with an average cover of 22%, and was greater than fleshy macroalgal cover at 83% of the sites. Overall, coral juvenile density was low but was positively associated with higher densities of Diadema antillarum, highlighting the importance of herbivory on the reefs. Nearshore coral reefs in Barbados were in a better state than other areas, exhibiting higher coral cover dominated by spawning corals, higher densities of coral juveniles exhibiting higher coral cover dominated by spawning corals, higher densities of coral juveniles and D. antillarum. Low biomass of herbivorous fishes at a majority of the coral reef sites is of major concern for the functioning of these reefs. Conservation of parrotfishes and other herbivores is necessary given the abundance of algae on most of these reefs and the beneficial effect of their presence on coral juveniles. This is the first comprehensive study that compares the state of Orbicella reefs in the Eastern Caribbean, providing valuable information that will be useful in creating realistic targets for future management and conservation.

Publication metadata

Author(s): Williams SM, Sanchez-Godinez C, Newman SP, Cortes J

Publication type: Article

Publication status: Published

Journal: Marine Ecology

Year: 2017

Volume: 38

Issue: 2

Print publication date: 01/04/2017

Online publication date: 23/09/2016

Acceptance date: 16/07/2016

ISSN (print): 0173-9565

ISSN (electronic): 1439-0485

Publisher: Blackwell Publishing Ltd


DOI: 10.1111/maec.12395


Altmetrics provided by Altmetric